right ill cut the story short, my mrs's 206 gti's clutch went, took it to mr clutch who took 5 days to replace it

ever since they replaced it theres a loud "ticking" kind of noise when the clutch isnt down, when the clutch is pressed it goes away.
now, today we took her car back to them to fulfil the terms of the warranty and i asked them what the noise may be since it only appeared after the new clutch, the guy told me it sounds like the diff bearing is drokked but will be ok to drive no problem!

now im not too clever on gearboxes but wouldnt something like that affect the way the car drives rather than just make a ticking sound while the clutch pedal isnt depressed?
feel abit stupid asking on here for advice but i dont know any other friendly(ish) bunch of clever people
